<template>
  <div
    ref="BarChartDom"
    :class="className"
    :style="{ height: height, width: width }"
  />
</template>

<script>
import { defineComponent, nextTick, ref, onMounted } from 'vue'

import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import resize from './mixins/resize'

const animationDuration = 6000

export default defineComponent({
  name: 'BarChart',
  props: {
    className: {
      type: String,
      default: 'chart',
    },
    width: {
      type: String,
      default: '100%',
    },
    height: {
      type: String,
      default: '300px',
    },
  },
  setup() {
    let chart = null
    const { initResize } = resize()
    let BarChartDom = ref()

    const initChart = () => {
      chart = echarts.init(BarChartDom.value, 'macarons')
    }

    const setOptions = () => {
      chart.setOption({
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            // 坐标轴指示器，坐标轴触发有效
            type: 'shadow', // 默认为直线，可选为：'line' | 'shadow'
          },
        },
        grid: {
          top: 10,
          left: '2%',
          right: '2%',
          bottom: '3%',
          containLabel: true,
        },
        xAxis: [
          {
            type: 'category',
            data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
            axisTick: {
              alignWithLabel: true,
            },
          },
        ],
        yAxis: [
          {
            type: 'value',
            axisTick: {
              show: false,
            },
          },
        ],
        series: [
          {
            name: 'pageA',
            type: 'bar',
            stack: 'vistors',
            barWidth: '60%',
            data: [79, 52, 200, 334, 390, 330, 220],
            animationDuration,
          },
          {
            name: 'pageB',
            type: 'bar',
            stack: 'vistors',
            barWidth: '60%',
            data: [80, 52, 200, 334, 390, 330, 220],
            animationDuration,
          },
          {
            name: 'pageC',
            type: 'bar',
            stack: 'vistors',
            barWidth: '60%',
            data: [30, 52, 200, 334, 390, 330, 220],
            animationDuration,
          },
        ],
      })
    }

    onMounted(() => {
      nextTick(() => {
        initChart()
        setOptions()
        initResize(chart)
      })
    })
    return { chart, BarChartDom }
  },
})
</script>
